Watc h - r eg u lato r



(ModeL) J. A. JOHNSON.

Watch Regulator.

Patented March 29,1881.

N4 PETERS, PHOTO-LITHDGRAPHER, WASHIIGGTON. u C

LII

UNITED STATES PATENT Farce.

JOHN A. JOHNSON, OF ROCKFORD, ILLINOIS.

WATCH-REGULATDR.

SPECIFICATION forniing part of Letters Patent No. 239,387, dated March29, 1881.

Application filed August 9, 1880. (ModeL) To all whom it may concern:

Be it known that I, JOHN A. JOHNSON, of the city of Rockford, in thecounty of Winnebago and State of Illinois, have invented anew and usefulImprovement in VVatch-Regu lators, of which the following is aspecification.

This invention relates to the moving ofthe regulator, and its object isto adjust the regulator of a time-keeper to measure time; and itconsists, mainly, in the combination, with the free end portion of theindex -finger, of a pivoted screw movement, which, with otherimprovements to be hereinafter described, constitute the subjectmatterof this specification.

In the accompanying drawings, Figure 1 is an isometrical representationof a watch-plate with my improved regulator in place, of which Fig. 2 isa vertical-section on dotted line 00. Fig. 3 is a like section slightlymodified. Fig. 4 is a vertical section on dotted line y.

In the figures, a represents one of the plates of a watch employed tosupport the works journaled therein.

At 1) is represented a balance-bridgeof the usual form, designed toreceive the jewel journal-support of the balancewheel, and is fixed inposition on the plate a, in the usual manner, by means of steady-pinsand a suitable clamping-screw, c. The overhanging journalsupporting endof this bridge is provided with a boss, cl, projecting from its outerface, havingits outer edge beveled under, being of less diameter at theouter face of the bridge than at its outer surface, producing adovetailed edge.

At 0 is represented an indexarm, having its inner end portion, h, ofopen spring-rin g form, with inner edge beveled and of proper size toembrace the beveled edge of the boss on the bridge with sufficient forceto give it a steady firm bearing, and capable of an oscillatory movementthereon.

The screw-supporting frame consists of a bed, t', of suitabledimensions, from the ends of which rise cars It and Z, of which the caris fitted to receive the end journal of the regulating-screw, and theear Zis formed with an opening on its upper end, to admit the journal atthe head end portion of the regulating-screw to enter. The bed of thisscrew-frame is provided with a countersunk hole, m, near its center,adapted to receive a suitable pivotscrew to connect it with thewatch-plate.

At a is represented the pivot-screw, formed to enter the countersunkhole in the frame, and is provided with a shoulder to rest on the outersurface of the plate, and its screw-threaded portion to enter the plateto fix the frame in position thereon in such a manner as to permit it tooscillate.

At 0 is represented the regulating-screw, fitted with cndjournahp, andshoulderedjournal r, adapted to enter the bearings in the cars it and l,to revolve therein and prevent endwise movement. This screw is providedwith a screwnut, 8, having its under side fitted to slide on the face ofthe bed of the screw-frame, and its outer surface grooved transverselyof the screw, to receive the index-finger arm. These parts are locatedon the plate in proper position and fixed thereto, as hereinbeforedescribed, and in such relative position that the arm of the indexfinger will engage the groove in the outer face of the screw'nut.From this arrangement it will be seen that by turning the screw ineither direction the nut will be made to move in the lengthwisedirection of the screw, in one or the other direction, as the screw isturned to the right or left, and the movement of the screw-nut willcarry with it the index-finger, and its radial movement will cause thescrewframe to oscillate on its pivotal center, which will alwaysmaintain a right angle to the in-' deX-finger, and will prevent crampingof the parts.

Instead of the groove formed in the outer face of the screw-nut toreceive the arm of the indexfinger, it may be provided with a hole onits outer face to receive a pin depending from the under side of thearm, as at Fig. 3; or the slotted nut may be employed to receive thedepending pin, to permit it to slide therein, in which instance thescrew-frame may be fixed to prevent oscillation, and the movement of thepin in the slotted nut to compensate therefor.

At t are represented pins or studs depending from the under side of theindex-arm, designed to receive the outer coil of the hairspring betweenthem, and which, in the movements of the index-arm, by means of itsconnection with the operating-screw, will serve to vary the length ofthe working portion of the spring, producing a regulator to accelerateor retard the movements of the balancewheel with which it is connected,and consequently control the movements of the timekeeper, to cause it tomeasure time correctly.

At a is represented a graduated scale of curved segment form, the curveof which is produced from the center on which the indexfinger swings,and with a radius about equal to the length of the finger. This scaleserves as a guide by which to determine the extent of movement of theindex-finger.

In the foregoing I have represented the screw-frame provided with ascrew-bearing opening upward to admit the screw; but this portion of myinvention may be reversed, as represented in the several Figs. 5, 6, and7, in which the bed a has one of its ends slotted, as at b, to admit thepassage of the screw from its under side, and one of the ears, as at c,is also slotted from the under side, to receive the shouldered journal(1 at the head end of the screw, all of which is clearly shown in thedrawings.

Instead of the graduated index beingformed on the watch-plate in curvedform, as hereinbet'ore described, it may be constructed as at e, bein apart of or fixed to the bed a, of the screw-frame, which constructionwill not require a curved index, as it will oscillate with the bed, andalways maintain its relative po sition with the index-finger.

I claim as my invention- 1. The combination, with the regulator, of ascrew movement employed to adjust the regulator, and capable of anoscillatory movement, to maintain its relative position with theindex-finger, substantially as and for the purpose hereinbefore setforth.

2. The combination, with a regulator provided with a screw movementcapable of an oscillatory movement, substantially as described, of agraduated index to indicate the movements of the index-finger, ashereinbefore set forth.

3. The combination, with the pivoted screwframe, of an operating-screwmounted therein, provided with a screw-nut operating to adjust theregulator, substantially as and for the purpose hereinbet'ore set forth.

4. The combination, substantially as hereinbei'ore set forth, of aregulator, a pivoted screwoperating mechanism, and a graduated index,these parts combined and operating substantially as and for the purposehereinbefore set forth.

JOHN A. JOHNSON.

Witnesses JACOB BEHEL, A. O. BEHEL.

